In R4.1 of the 15454, the ML-series Ethernet cards provide QoS enhancements that allow Service Providers to deliver CIR/PIR (Committed Information Rate/Peak Information Rate) type SLA’s. Which two specific QoS mechanisms were added to accomplish this?

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The graph represents optical signal power versus wavelength measurement from 1550nm to 1560nm.
What is the gain tilt of all of the seven channels?

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The diagram shows a campus with a L2 switched backbone. The backbone has a single VLAN (= subnet) with no loops. The links into the backbone are routed interfaces, not VLAN trunks. Switch X is the STP root of the core VLAN and switch Y is the standby root. The connection between X and Y is an EtherChannel. The network architect wants to add more redundancy by connecting the L3 switches in the distribution layer to both X and Y. What best describes that plan?

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The network shown supports Synchronous Status Messaging (SSM), which byte supplied by the ADM at
Site B in both directions in the section overhead is used for transporting SSM messages?

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In the OC-48 signal shown, when is the extinction ratio acceptable?

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Using the shown debugging excerpt, what option best describes the problem?

What type of effect on optical signals occurs when temperature fluctuations and bending stresses on fiber?